/dev/emcpowerX device names on cluster nodes shows mismatch

Solution Verified - Updated -

Issue

  • The /dev/emcpowerX names on cluster nodes are showing mismatch, as from the following output LUN with ID 102 on system "node1" is having name /dev/emcpowera while the same LUN with ID 102 on another system "node2" is having name /dev/emcpowerb.
node1:
Disk /dev/emcpowera: 805.3 GB, 805306368000 bytes [LUN 15]
Disk /dev/emcpowerc: 322.1 GB, 322122547200 bytes [LUN 102]     <---
Disk /dev/emcpowerd: 107.3 GB, 107374182400 bytes [LUN 101]
Disk /dev/emcpowere: 107.3 GB, 107374182400 bytes [LUN 100]

node1
Disk /dev/emcpowera: 805.3 GB, 805306368000 bytes [LUN 15]
Disk /dev/emcpowerb: 322.1 GB, 322122547200 bytes [LUN 102]     <---
Disk /dev/emcpowerc: 107.3 GB, 107374182400 bytes [LUN 101]
Disk /dev/emcpowerd: 107.3 GB, 107374182400 bytes [LUN 100]

Environment

  • Red Hat Enterprise Linux 5.3
  • Two node cluster
  • EMC Clariion SAN devices shared between cluster nodes.
  • EMC PowerPath.

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